Traverse mechanism for winding machines



April 14, 1942. A. w. ARTERTON TRAVERSE MECHANISM FOR WINDING MACHINES 4Sheets-Sheet 1 Filed April 18, 1941 \NVENTOR 43%;," 9 7% AT ORNEYS April1942- A. w. ARTERTON TRAVERSE MECHANISM FOR WINDING MACHINES Filed April18, 1941' 4 Sheets-Sheet 2 lNVENTQR I (WM/la @222; AETORNEYS I April1942- A. w. ARTERTON v TRAVERSE MECHANISM FOR WINDING MACHINES FiledApril 18, 1941 4 Sheets-Sheet 3 IINVENTOR BY 9L Z A -roRNEYs v April1942- A. w. ARTERTON TRAVERSE MECHANISM FOR WINDING MACHINES Filed April18,- 1'941 -4 SheetsSheet 4 INVENTOR W'MQJJM v ATTORNEYS Patented Apr.14, 1942 TRAVERSE MECHANISM FOR WINDING MACHINES Alfred Walter Arterton,Westfield, Mass., assignor to Foster Machine Company, Westfield, Mass, acorporation of Massachusetts Application April 18, 1941, Serial No.389,134

Claims.

This invention relates to winding machines and more particularly to themeans for traversing the guide which lays the yarn or thread in place onthe core upon which the yarn is wound to build up the package.

One object of my invention is to provide means to produce a variabletraverse of the yarn guide and consequently a variable lay of the yarncoils in succeeding layers. A further object is to provide mechanism forcontrolling the position of the yarn guide in its traversing movement toproduce a novel yarn package having tapered or rounded ends. A furtherobject is to wind a package so that the coils at the end of the packageare long and looping in contra-distinction to regular short and angularcoils. A still further object is to build a winding package so that abinding of the helical coils, particularly at the ends of the package isprovided to insure free unwinding delivery of the strand over the end ofthe supply package.

Other and further objects of the invention will be made apparent in thefollowing specification and claims.

In the accompanying drawings,

Fig. 1 is a front elevational View of a winding 1 machine embodying thepresent invention, with parts broken away;

Fig. 2 is a right side elevational view of the structure shown in Fig. 1

Fig. 3 is a detail sectional view substantially On line of on a somewhatlarger scale;

Fig. 4 is a detail plan view of the yarn guid and cam;

Fig. 5 is a view similar to Fig. 4 but showing the parts positioned forsubsequent cycle of operation;

Fig. 6 is a detail view of the ratchet cam;

Fig. 7 is a detail view looking from the right of Fig. 6 and includingthe ratchet actuating pawl;

Fig. 8 is a fragmentary detail view of a portion of the structure as inFig. 2 but showing a modified form of yarn guide;

Fig. 9 is a fragmentary detail plan view of the structure shown in Fig.8; and

Fig. 10 is a view similar to Fig. 4 but showing a multiple yarn guidearrangement.

Referring to the drawings, Ill indicates a housing supported on anysuitable frame or base as indicated at 9 in Fig. 2. A package supportingspindle I l is rotatably supported in bearings, one of Which is shown atI2, mounted on housing i0.

A traverse cam shaft 13 is J'ournaled in suitable bearings carried bythe housing l0, one of which bearings is shown at H! in Fig. 1, thebearing bushing being indicated at l5. The spindle H and shaft l3 aregeared together for simultaneous rotation at predetermined relativespeeds in the usual manner by gearing not shown. The spindle H supportsa drum l6 adapted to receive a package core l1. Shaft I3 carries atraverse cam I8 of conventional form secured thereto by a set screw I 9.

It will be understood that in the present embodiment of my invention,the rotation of the traverse cam shaft l3 will be so related to therotation of the spindle l l, as to provide a lay of the yarn inrelatively wide open spaced apart helical coils. This in conjunctionwith the manner of looping the end coils as will be described, willbuild up a package for easy and smooth unwinding thereof under allconditions of handling present day yarns, such as cotton, silk, rayon,Nylon, and yarns of other synthetic compositions.

A guide support, generally indicated at 20 (Figs. 2 and 3) is supportedon shaft I3 by an arm 2| formed integral with support 20 and having ahub portion 22 fitting on bushing I5 exteriorly of housing ID. Thesupport 20 isheld in fixed position by a locking link 23 connecting thefree end of arm 2| to a stud 24 secured. to housing l0.

A traverse guide bar 25 is secured in oneend of support 20 by a setscrew 26 (Figs. 1 and 2), the other end being similarly secured withinhousing In to the opposite end of support 20, not shown. A traverse tube28 is slidably mounted on bar 25 and is provided at one end with a, camfollower 29 engaging in the groove 30. of traverse cam IS. The outer endof tube 28 has fixed thereto a block 3! which may be secured thereto inany suitable manner said assembly serving as the yarn guide carrier. Asshown, a plate 32 (Fig. 3) is welded or otherwise secured to tube 28 andan intermediate plate 33 is welded or otherwise secured to plate 32.Block 3| is recessed at its back to receive plate 33 and is securedthereto by a machine bolt 31. As best shown in Fig. .3, the bar 25 andtraverse tube 28 are positioned in a recess 38 formed in the support 20and the upper end of plate 32 slides along a, machined surface 39 aboverecess 38-and beneath a cover plate 40 secured at its ends to support 20by machine screws 4| (Fig. 1). l

A yarn guide is pivotally mounted at the lower end of block 3i by meansof a pin 46 mof block 3 I. frictionally holds pin 46 and the yarnguide-45 carried thereby in the various positions to which it is movedby cam follower 50, as later disclosed. From the mechanism so fardescribed, a

it will be apparent that block 3| is reciprocated in strokes of fixedlength in a parallel longitudinal direction relative to spindle H, bycam stroke of block 3| by engagement of follower, 50 with one or theother of the slope cams 55 and 56'formed at the opposite ends of and atan angle to a cam plate 51 said cam assembly serving as ayarnguideactuator as will be explained. The upper edge of plate 51 is bentrearwardly to form a flange 58 and is slidably supported on thesimilarly rearwardly bent edge or flange 59 of '1) rotatably mounted ona stub shaft 66 secured in thefree end of an arm 61 which is bolted at66 to support 20. As best shown in Figs. 1 and 2, reciprocation isimparted to cam plate 51 from cam 65 through an arm secured at 1| to an4 extension 12 of cam slope 55. The opposite end of arm is fixed at 13to the inner end of a rod 14 slidably mounted in arm 2| and a bracket 15extending from support 26. Rod 14 carries a cam roll 16 which-engagesfacecam' 65 and is held in operative relation therewith by a compressionspring 11 surrounding rod 14 and compressed between a collar 18, fixedto the rod 14, and bracket 15. V

Relatively slow rotation is imparted to.face cam 65 by means of aratchet 80 to which the cam is secured by machine screws .8| (Fig. '1).Theratchet 80 is driven by a pawl 82 actuated by an eccentric 83 uponwhich the pawl is mounted. The'eccentric 83 is carried by a collar 84adjustably secured to shaft l3, upon which trav-l erse cam |8 is also.mounted. Pawl 82 is heldin proper operative relation'to the ratchet'8llby. a leaf'spring 85. secured to arm 2| as by machine screw 86.. :Witheach revolution of shaft I3 block 3| is given one complete reciprocationand the ec- .centric 83 also makes one revolution to advance ratchet. 80and cam 65 to slightly shift plate 51 and its cam longitudinally of thespindle .The'effect of the shifting of cam plate 51 is to .vary theposition of the thread or yarn spiral laysonthe .core |1the said laysbeing successively offset fromeach other by small amounts towards. oneend of the core. as the follower 16 ascends. tothe peak of face cam 65and then towards the other end ofthe core, as the follower descends. Theresult isthat a yarn package P having tapered ends is produced as shownin Figs. 4and5. I am aware that tapered end packages have Successivepivotal movements are imparted to pin 46 at one or both ends of thetraversing been made by longitudinally shifting the stroke of thetraverse as by a progressive and bodily shift of the traverse camtogether with its yarn guide relative to the cam shaft. By my con- 5struction the stroke imparted by traverse cam I8 may, and preferablydoes, remain fixed in both length and position, and the shift of theyarn lays is effected by altering the position of the yarn guide firstat one end of its traverse and then at the other end of its traverse.Reiz'erring to Fig. 4, the fixed traverse im- [parted by traverse camI8. is represented by the i extreme positions of pin 46 indicated bydotted and solid lines. It will be assumed that cam plate 51 has beenshifted to its extreme left hand position as 'viewed in Fig. 4 and thatas pin 46 V has reached its full line position, follower 50 hascontacted slope cam 55 and has turned pin 46 and-yarn guide to theposition shown in full line. As pin 46 and the yarn guide 45 are movedtothedotted line position by traverse cam l8 the yarn laid on the core Hin its extreme left handposition. When pin 46 and the yarn guide againreturn to the left after the next reciprocation, follower 16 has madeits initial step in the descent. of cam 65 and has moved cam plate 51one-increment to the right (Fig. 4). Follower 50 therefore contactsslope cam 56 and pin 46 at the end position of its stroke, is turned aslight amountv clockwise so that yarn guide 45 does not reach itsprevious extreme left hand position but is moved to the positionindicated in dotted lines at {x in Fig. 5, thus offsetting the ensuinglay of yarn to the right. On each succeeding reciprocation of the yarnguide succeeding increments of movement of cam plate 51 to the righteventually tilt the yarn guide to the position shown in full line inFig. 5 so that as the guide moves to the right to the dotted lineposition 11 the yarn is laid on the core in its extreme right handposition. Follower 16 now ascends cam 65, bringing slope cam55 intooperation to gradually return the yarn guide to the position of Fig. 4.This operation is repeated until the desired size of package has beenwound on the core, the repeated ofisetting of the yarn lays to the rightand left giving atapered form to the ends of the package P.

x The swinging movement of the yarn guide at the end of its traverse hasthe result that the pitch of the convolutions at'that end of thepackageis shorter than at the center of the package and the bend of theyarnas it reverse its direction toward theopposite end of the coreinstead of being sharply angular is more wide and looping, resulting asecure binding of the helical coils at the end of the package, andassuring a subsequent free unwinding delivery of the yarn from thepackage in use. These advantages are not secured by a steadydisplacement of the traverse carn'it'self 'as' in previous machines.

In Figs. 1, 2, 4, and 5 the yarn guide is shown as comprising a wirehaving a single angular bend, the ,yarn being led to the core I 1upwardly between the core and support 20 (Fig. 2) and from a sourceoutwardly of the free end of the core, (Fig. 1). With this arrangementthe yarn A at the start of the winding operation normally rests in thebend of the guide 45, but as the 0 package grows, the y-arnslidesrearwardly on the -guide as indicated at A in Fig. 2, thus shorteningtheeffectiveradius of the pivotal movement of the *guide" at the endsofthe traverse. -As a result. there is a gradual decrease in theofisetting of the lay ofyarnas the package builds up. A

uniform offsetting may also be securedif desired to the top of camfollower 58 by a set screw 9!, v

the various operating parts being as previously described. Yarn guide 90is bent to provide an eye 92 at its end which maintains a constantradius of swing for the yarn A regardless of the growth of the packageP.

Both forms of yarn guide above discussed are maintained out of contactwith the package, and the degree and character of movement given theyarn guide relative to its support is predetermined by the slope andspacing of cams 55 and 56 and by the shape of cam 65 and the rotativeposition of the latter on shaft 66.

Fig. shows somewhat diagrammatically a modified structure by which aplurality of packages B, B, are simultaneously wound on one machine. Asshown, two pivot pins 95 and 96 are provided, mounted on common supportfor being given simultaneous traverse movements longitudinally of thespindle, as previously described with respect to pin 46. Each pin 95 and96 carries its respective yarn guide 91 and 91. The pins 95 and 96 arerespectively provided with cam followers 98 and 99 which respectivelycooperate with the cams 55 and 56 previously described. The camfollowers 98 and 99 are connected together for simultaneous movement bya link I00. Thus the movement imparted to follower 98 by cam 55 istransmitted to follower 99 and similarly actuation of follower 99 by cam56 is transmitted to follower 93. As will be evident, the modificationshown in Fig. 10 simultaneously winds two packages B and B' exactlysimilar in build to package P previously described.

I claim:

1. In a winding machine including a rotatable package supportingspindle, a yarn guide carrier, means to reciprocate said carrierlongitudinally of the spindle, a yarn guide pivotally mounted on thecarrier, a cam follower secured to the pivot of the yarn guide, a camplate mounted for reciprocation parallel to the path of reciprocation ofthe yarn guide carrier, cams carried at opposite ends of said plate andrespectively engageable with said follower at opposite ends of the pathof reciprocation of the yarn guide carrier, and means to reciprocatesaid cam plate at a slower rate than the yarn guide carrier to effect asuccession of engagements of the follower with one of said cams as saidplate moves in one direction to successively swing the yarn guidetowards one end of the spindle, and eiTect a successiOn-of engagementsof the follower with the other of said cams as the plate moves in theopposite direction to successively swing the yarn guide toward theopposite end of the spindle.

2. In a winding machine including a rotatable package supportingspindle, a yarn guide carrier, means to reciprocate said carrierlongitudinally of the spindle in a path of fixed length, a yarn guidepivotally mounted on the carrier, a cam follower secured to the pivot ofthe yarn guide, a cam plate mounted for reciprocation parallel to thepath of reciprocation of the yarn guide carrier, cams carried atopposite ends of said plate and respectively engageable with saidfollower at opposite ends of the path of reciprocation of the yarn guidecarrier, and means to reciprocate said cam plate at a slower rate thanthe yarn guide carrier to effect asuccession of engagements of thefollower with one of said cams as said plate moves in one direction tosuccessively swing the yarn guide towards one end of the spindle, andeffect a succession of engagements of the follower with the other ofsaid cams as the plate moves in the opposite direction to successivelyswing the yarn guide toward the opposite end of the spindle.

3. In a winding machine, including a rotatable package supportingspindle, a yarn guide carrier having a traversing movement through afixed stroke, a yarn guide movably mounted on said carrier, a yarn guideactuator having means for changing the position of said yarn guide onsaid carrier, and means for reciprocating said actuator slowly ascompared with said traversing carrier to periodically shift the actionof said yarn guide positioning means from one end of said traversingstroke to the other end of said traversing stroke.

4. In a winding machine, including a rotatable package supportingspindle, a yarn guide carrier having a traversing movement through afixed stroke, a yarn guide movably mounted on said carrier, an actuatorhaving meansv for changing the position of said yarn guide on saidcarrier, said positioning means acting on said yarn guide to shift theeffective traversing movement of said yarn guide by a series ofsuccessive increments in one direction when located at one end of saidtraversing stroke and then by a series of successive increments in theother direction when located at the other end of said traversing stroke,and means for reciprocating said actuator slowly as compared with saidtraversing carrier to periodically shift the action of said yarn guidepositioning means from one end of said traversing stroke to the otherend of said traversing stroke.

5. In a winding machine, including a rotatable package supportingspindle, a yarn guide carrier having a traversing movement through afixed stroke, a yarn guide movably mounted on said carrier, an actuatorcomprising a cam plate having a slope cam at each end thereof forpositioningsaid yarn guide, one of said slopecams being located adjacenteach end of said traversing stroke, means for reciprocating saidactuator slowly as compared with said traversing carrier to periodicallyshift the action of said slope cams from one end of said traversingstroke to the other end of said traversing stroke.

ALFRED WALTER ARTER'I'ON.

